As roof jacks are easy to set up and remove they are ideal to use on various types of roofing project.
Roof jacks on existing roof.
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Ideally locate a rafter below the sheathing.
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You can usually feel sheathing nails which are driven into rafters through the underlayment attach a jack by driving two 16d nails never roofing nails into a rafter.
Others often prefer to place the first one at the edge of the roof.
Roofers friend the ultimate roof jack removal tool and roof repair tool.
Determine the best place to fasten your first roof jack.
Secure the new roof jack to the roof decking with roofing nails.
I came across this steep roof and took this video about installing the roof jacks and the board before installing the roofing materials.
How to use roof jacks on existing roof.
Pry up the old jack and remove it by pulling it up over the vent pipe.
Cut roof shingles to fit around the roof jack and insert them under the existing shingles.
Roof jacks provide a stable surface to work increasing safety and making it easier to apply roofing.
Slide a new roof jack sized to fit your vent pipe over the pipe.
Placing the first roof jack.
It is usually placed on the fourth or fifth level of the rows of shingles depending on how comfortable you feel on either.